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Finding the Fourth Proportional to 640,876.70, 960,002.85 and 325,511.30

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Solution

The fourth proportional to 640,876.70, 960,002.85 and 325,511.30 is: 487,600.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,876.70 : 960,002.85 = 325,511.30 : x
  2. Step 2: Convert to fraction form
    640,876.70/960,002.85 = 325,511.30/x
  3. Step 3: Cross multiply
    640,876.70x = 960,002.85 × 325,511.30
  4. Step 4: Simplify right side
    640,876.70x = 312,491,775,707.21
  5. Step 5: Solve for x
    x = 312,491,775,707.21/640,876.70
  6. Step 6: Final answer
    x = 487,600.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.